Data Storage and Manipulation · SHS2 Computing

Lesson notes

Learning Objectives

Indicator: 2.1.1.LI.3 - Discuss 3 major Arithmetic Operations and apply them taking into consideration their various functions

By the end of the lesson, learners can:

State the three major arithmetic operations used in programme execution (addition, subtraction, and multiplication) and describe the function of each.
Explain how each arithmetic operation is implemented at the logic circuit level using adders, subtractors, and multipliers.
Apply the three arithmetic operations to solve simple binary arithmetic problems (binary addition, binary subtraction, and binary multiplication).
Discuss the practical functions of these operations in real programmes such as mobile money transactions, salary calculations, and inventory management systems.
Work collaboratively in mixed-ability groups to present how arithmetic operations execute within a simple programme, showing tolerance and respect for diverse contributions.

Sign in with your phone number to read the full note and download the GES plan - free.

Sign in with phone number

Curriculum details

Strand: Computer Architecture & Organisation (Strand 1)
Sub-strand: Data Storage and Manipulation (1.1)
Content standard: 2.1.1.CS.1 - Demonstrate knowledge and understanding of Programme Execution and Logic Instructions 2.1.1.LO.1 Develop knowledge and skills in implementing and applying programme execution and logic instructions effectively.
Indicator: 2.1.1.LI.3 - Discuss 3 major Arithmetic Operations and apply them taking into consideration their various functions
Suggested placement: Semester 1, Week 3 (Week 3 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 51

Exemplars (from the NaCCA curriculum)

Group Work/Collaborative Learning:
- Engage in interactive presentations, video analysis, and debates by dividing the class into mixed-ability groups. Task the groups with discussing the three major Arithmetic Operations and applying them, considering their various functions.
- Similar to previous indicators, ensure the group division promotes inclusivity and equity, considering the needs of individuals with visual impairment, dyslexia, dysgraphia, and other diverse learning needs.
Teaching and Learning Materials:
- * Notepad or exercise book * Pen * Smartphones * Laptops
- * Desktop computers * Tablets * TV and Radio
- Open Educational Resources (including YouTube, MOOCs -
- Udemy/Coursera, Khan Academy, and TESSA)
- * The iBox/iCampus (CENDLOS) * Productivity tools ix. Subject-based application software
- Instructional Laboratories (with multimedia equipment and smartboards)
- Maintenance and repair workshops
Assessment (2.1.1.AS.3). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding.